fix: update readme docs (#1354)

Author: elribonazo

packages/sdk-multichain-ui/README.md

@@ -1 +1,25 @@
 # sdk-install-modal-web
+
+Install modal web package for multichain, renders and uses the new mobile wallet protocol ConnectionRequest QRCodes.
+
+This project includes fully functional InstallModal web used in the Multichain SDK for Trusted flows.
+
+Untrusted flows use the OTPModal which exists but is not yet fully supported.
+
+## Development
+
+```bash
+yarn dev
+```
+
+or
+
+```bash
+yarn start
+```
+
+## Building locally
+
+```bash
+yarn build
+```

packages/sdk-multichain/README.md

@@ -22,3 +22,23 @@ src/
 ├── multichain/       # Concrete implementations
 └── store/           # Storage implementations
 ```
+
+
+## Building Locally
+Either build with ```yarn build``` from the root workspace project or build directly the package, in this last case, it is required that u build [ui package first](../sdk-multichain-ui/README.md)
+
+```bash
+yarn build
+```
+
+## Running Tests
+
+```bash
+yarn test
+```
+
+with coverage
+
+```bash
+yarn test:ci
+```

playground/multichain-react/README.md

@@ -6,29 +6,6 @@ A test dapp for the MetaMask Multichain API.
 
 `yarn`
 
-## Configuration
-
-### Environment Variables
-
-This project supports optional environment variables for enhanced functionality:
-
-#### Helius RPC API Key (Optional)
-For improved Solana RPC performance, you can configure a Helius API key:
-
-1. Copy the example environment file:
-   ```bash
-   cp .env.example .env.local
-   ```
-
-2. Get a free API key from [Helius](https://www.helius.dev/)
-
-3. Add your API key to `.env.local`:
-   ```
-   REACT_APP_HELIUS_API_KEY=your_actual_api_key_here
-   ```
-
-**Note:** If no Helius API key is provided, the app will automatically fall back to public Solana RPC endpoints.
-
 ## Usage
 
 To start the development server: